Wade Williams of Targetware recently spoke up in the IMG forums about the latest 0.61 update to this massively multiplayer online flight sim. The project is currently free to play in its open beta form and includes three mods for flying in campaigns for WWI, WWII and the Korean war.

Williams explains version 0.60 of the game broke the auto-updater for Mac users, so you'll need to follow a few manual instructions to get things back on track. They're listed out in the Targetware forums at the link below.

If you're completely new to Targetware, here's a quick explanation from their site:

The first Targetware game, Target Korea, is a massively multiplayer online flight combat simulator, set in the Korean War. Fly action-packed missions against a sky full of planes piloted by real people: dogfights, escorts, bombing runs and furballs. Play multi-mission scenarios from the war's inception all the way through the armistice, flying everything from the P-51 Mustang to the MiG-15bis. Play on other people's servers, or run your own, with your own rules.